JPH0939572A - Door weather strip for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration in sealing performance caused by high water pressure without weakening closing force of a door. SOLUTION: A door weather strip is provided with an attaching base part 6 to be mounted to a door sash 1, and a seal lip part 10 extending on the attaching base part 6, to be bent or curved toward the outside of a car in closing of the door, and to be brought in elastic contact with a body panel 4 near the body panel 4 facing the end 1a of the door sash 1. The tip 10b of the seal lip part 10 is padded on the outside of the car, and a thick wall part is so formed as to cover the root part to serve as the bent part or the curved part of the seal lip 10 in closing of the door from the outside of the car.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door weather strip which is mounted on a door sash of an automobile and elastically contacts with opposing body panels when the door is closed to seal between the doors.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a door sash 1 for an automobile has a weather strip 2 for an automobile door.
When the door 3 is closed, it is elastically contacted with the opposing body panel 4 to seal between the door 3 and the body panel 4. Although FIG. 6 shows the case of the front door, the same applies to the rear door. In such a vehicle door weather strip 2, an attachment base 6 is attached to a retainer 5 provided on the door sash 1, and the attachment base 6 has a seal lip 7 having a substantially tongue-shaped cross section. A hollow seal portion 8 having a substantially circular cross section is integrally formed. Then, as shown in FIG. 7, the door 3
When closed, the seal lip portion 7 and the hollow seal portion 8 are in elastic contact with the opposing body panel 4. The rear lip portion 11 contacts the door sash 1 when the rear lip portion 11 is fitted to the retainer 5, and the vehicle door weather strip 2
It is a lip that seals the back of the.

[0003]

However, when the door 3 is closed, the seal lip portion 7 is bent or curved toward the outside of the vehicle, and near the body panel 4 facing the edge portion 1a of the door sash 1 near the body panel 4. Therefore, when the door 3 is closed, high water pressure is directly applied through the gap 9 formed between the edge portion 1a of the door sash 1 and the body panel 4 facing the door sash 1, because There is a case where it is applied around a bent portion or a curved portion of the seal lip portion 7, that is, around the base portion 7a of the seal lip portion 7.

When high water pressure is applied, the root portion 7a of the seal lip portion 7 is largely bent or curved as shown in FIG. 8, so that the entire seal lip portion 7 receives high water pressure and the rear seal lip portion 11 is closed by the door sash. Water leakage through the back surface easily occurs due to not compressing 1. In addition,
In the weather strip in which the back seal lip portion 11 is not formed, high water pressure may reach the attachment base portion 5 to destabilize the attachment state or cause a position shift. Further, due to the turning of the tip portion 7b of the seal lip portion 7, high water pressure reaches the hollow seal portion 8 and the hollow seal portion 8 is disengaged from the body panel 4 to weaken the sealing property. As a result, water leakage may occur. . In addition, since the wrinkles formed in the root portion 7a of the seal lip portion 7 due to bending or the like can be seen from the outside of the vehicle through the gap 9, there is a problem that the appearance is poor.

Therefore, as in an automobile door weather strip 12 shown in FIG. 9, the root portion of the seal lip portion 7 is thickened to form a thick portion 17a to increase the load of the seal lip portion 7 or to make a hollow seal. The load on the part 8 was increased to take measures against high water pressure, but the door 3
There was a problem that the closing force for the

Therefore, an object of the present invention is to provide an automobile door weatherstrip capable of preventing the deterioration of the sealing property due to high water pressure without increasing the closing force of the door.

Another object is to cover the root portion of the seal lip portion, which is wrinkled when the door is closed, to improve the appearance.

[0008]

In order to achieve the above object, an automobile door weather strip of the present invention is provided with a mounting base portion to be mounted on a door sash and an extension portion extending from the mounting base portion to the outside of the vehicle when the door is closed. In a vehicle door weather strip having a seal lip portion that bends or curves toward and faces the door sash edge portion in the vicinity of the body panel and elastically contacts the body panel, the tip portion of the seal lip portion is exposed to the outside of the vehicle. The thick portion is formed so as to cover the bent portion or the curved portion of the seal lip portion from the vehicle exterior side when the door is closed (claim 1).

Further, when the door is closed, the width of the thick portion of the seal lip portion is made wider than the gap formed between the edge portion of the door sash and the body panel facing the door sash portion to close the gap. Those are preferable (claim 2).

Further, a rear seal lip portion, which makes elastic contact with the door sash at the time of mounting the mounting base portion, is formed between the mounting base portion and the seal lip portion on the door sash side, and which is in elastic contact with the body panel when the door is closed. Is preferably formed between the mounting base portion and the seal lip portion (claim 3).

Further, a mounting base portion attached to the door sash covers an end portion of the door sash which is substantially horizontal, and a projection portion is provided on the vehicle outer side than the seal lip portion so as to project from the mounting base portion toward the body panel. It is preferable that the width of the thick-walled portion of the seal lip portion is made wider than the gap formed between the tip of the protrusion and the body panel facing the protrusion when closing the gap to close the gap. 4).

Here, according to the invention of claim 1,
The tip of the seal lip is formed of a thick portion that is built up toward the outside of the vehicle, and when the door is closed, the body that further bends or curves toward the outside of the vehicle and faces the edge of the door sash. The tip of the body comes into elastic contact with the body panel near the panel. At this time, the tip portion is formed with a thick portion so as to cover the root portion which is the bent portion or the curved portion of the seal lip portion from the outside of the vehicle, that is, the root portion is wound inside by the elastic contact of the seal lip portion. Since it is bent or curved, the wrinkles generated at the base are covered with the tip and hidden inside. Therefore, wrinkles are not visible from the outside of the vehicle through the gap, which is good in appearance.

Since the root portion of the seal lip portion is covered with the tip portion as described above, even if a high water pressure is applied through the gap due to, for example, a car wash, the tip portion is blocked and the high water pressure is directly applied to the root portion. Is less likely to be applied. Therefore, since the base part is not bent or curved, high water pressure is not applied to the entire seal lip part, and there is no gap between the seal lip part and the door sash. To be done. Further, it is also possible to prevent a case where high water pressure reaches the mounting base portion to destabilize the mounting state or cause a position shift. Further, since the tip portion of the seal lip portion is thick, it is difficult to turn over due to high water pressure, so that high water pressure does not easily reach the hollow seal, resulting in good sealing property. On the contrary, when the high water pressure is applied to the tip portion, the tip portion is placed on the body panel side, and the elastic contact force of the tip portion with respect to the body panel is increased, so that excellent sealing property is obtained.

According to the second aspect of the present invention, the width of the thick-walled portion of the seal lip formed is set so that when the door is closed,
Since the gap is made wider than the gap formed between the edge of the door sash and the body panel facing it, the above-mentioned high water pressure is less likely to be applied not only to the root portion but also to the periphery thereof. According to this, since high water pressure is less likely to wrap around and be applied to the root portion in an articulated manner, the sealing effect against high water pressure is further enhanced.

Further, according to the third aspect of the present invention, since the back seal lip portion which is in elastic contact with the door sash when the mounting base is attached is formed, the sealing performance is further enhanced. In addition to this, a hollow seal portion is formed, and when the door is closed, the seal lip portion is elastically contacted with the opposing body panel at the same time, so that the door and the body panel are doubly sealed.

According to the invention described in claim 4, the projection provided on the mounting base corresponds to the door sash in the invention described in claim 2, and the tip of the projection corresponds to the edge of the door sash. Is. Then, when the door is closed, the width of the thick-walled portion of the seal lip portion is made wider than the gap formed between the tip of the protrusion and the body panel facing the protrusion, so that the gap is closed. The high water pressure is less likely to be applied not only to the root portion but also to the periphery thereof. According to this, it is less likely that the high water pressure wraps around and is applied to the root portion in an articulated manner, so the sealing effect against high water pressure is further enhanced.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals. FIG. 1 is a sectional view showing an automobile door weather strip 22 according to a first embodiment of the present invention, and FIG. 2 is a diagram showing an automobile door weather strip 22 mounted on a door sash 1 and a door 3 closed. It is sectional drawing which shows a state. 2 is a cross-sectional view taken along the line AA of FIG. 6, and the body panel 4 corresponds to the roof portion of the vehicle body, but the same applies to the front pillar portion or the rear pillar portion instead.

This automotive door weather strip 22
Is a mounting base 6 that is mounted on the retainer 5 provided on the door sash 1 as in the conventional example, and the mounting base 6 extends substantially vertically from the mounting base 6 and its tip portion 10b extends outward from the root portion 10a. It is composed of a slightly bent or curved seal lip portion 10 having a substantially tongue-shaped cross section, and a hollow seal portion 8 having a substantially circular cross section integrally formed on the attachment base portion 6 between the attachment base portion 6 and the seal lip portion 10. Has been done. The back seal lip portion 11 is a lip that comes into contact with the door sash 1 when attached to the retainer 5 and seals the back surface of the vehicle door weather strip 22.

The tip portion 10b of the seal lip portion 10 is formed as a thick portion which is built up toward the outside (the outside of the vehicle when fitted to the retainer 5), and when the door 3 is closed, it is shown in FIG. As described above, the portion B of the tip portion 10b is elastically contacted with the body panel 4 in the vicinity of the body panel 4 facing the edge 1a of the door sash 1 by being further bent or curved toward the outside of the vehicle. At this time, the tip portion 10b is thick so as to cover the root portion 10a, which is a bent portion or a curved portion of the seal lip portion 10 from the outside of the vehicle, that is, the root portion 10a is wound inside by the elastic contact of the seal lip portion 10. Parts are formed. by this,
Wrinkles generated in the root portion 10a by being bent or curved are covered with the tip portion 10b and hidden inside, so that they are not seen from the outside of the vehicle through the gap 9 and are good in appearance. At the same time as the seal lip portion 10 is elastically contacted, the hollow seal portion 8 is elastically contacted with the opposing body panel 4 to more reliably seal the space between the door 3 and the body panel 4.

According to the vehicle door weather strip 22 constructed as described above, as shown in FIG. 3, even if a high water pressure is applied through the gap 9 due to, for example, a car wash, the tip portion of the seal lip portion 10 is exposed. Since it is blocked by the vehicle exterior side wall portion C of 10b, it is difficult to directly apply high water pressure to the root portion 10a of the seal lip portion 10. Therefore, the rear seal lip portion 11 does not compress the door sash 1 due to the further bending or bending of the root portion 10a, or the seal contact of the seal lip portion 10 with respect to the body panel 4 is turned up and the sealing performance is deteriorated. There is no such thing. Conversely, high water pressure is applied to the vehicle exterior side wall portion C of the tip portion 10b, so that the tip portion 10b is pushed and the body panel 4
Since the elastic contact force of the B portion of the tip portion 10b with respect to is increased, excellent sealing properties can be obtained.

As described above, the excellent sealability is obtained by changing the root portion 10a of the seal lip portion 10 from the tip portion 10b.
As shown in FIG. 2, when the door 3 is closed, the width L1 of the thick portion of the tip portion 10b, that is, the width of the vehicle outer side wall portion C is widened to close the gap 9 when the door 3 is closed. The effect to high water pressure becomes large by making it possible. Further, for example, as shown in FIG. 4, if the tip portion 10b is formed so that the width L2 of the thick portion is further increased (L1 <L2), the effect is further enhanced.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
The embodiment will be described with reference to FIG. FIG.
Is a vehicle door weather strip 42 according to a second embodiment of the present invention mounted on a door sash 41,
It is sectional drawing which shows the state which the door closed.

This automotive door weather strip 42
Is composed of a mounting base portion 46, a seal lip portion 50, and a hollow seal portion 48, as in the first embodiment. The attachment base portion 46 is attached to the door sash 41 so as to cover the end portion 41b of the substantially horizontal door sash 41. The seal lip portion 50 extends substantially vertically from the mounting base portion 46 at a position on the vehicle outer side of the mounting base portion 46, and a tip portion 50b thereof has a cross-section substantially tongue slightly bent or curved from the base portion 50a to the vehicle outer side. It has the shape of a piece. The seal lip portion 50 is further bent or curved toward the outside of the vehicle when the door is closed, and near the body panel 44 facing the door sash edge portion 41a, the body lip 4 is formed.
It is supposed to be in contact with 4. A thick-walled portion is formed on the vehicle exterior side of the tip portion 50b of the seal lip portion 50 as in the first embodiment, and when the door is closed, the bent portion or the curved portion of the seal lip portion 50 is formed. The base portion 50a is formed so as to be wound inside and covered from the outside of the vehicle.

The mounting base 46 is provided with a projection 51 projecting from the mounting base 46 toward the body panel 44 outside the mounting position of the seal lip 50.
Then, when the door is closed, the width of the thick portion formed in the seal lip portion 50 is made wider than the gap 49 formed between the tip of the protrusion 51 and the body panel 44 facing the protrusion 51 to close the gap 49. It is supposed to do.

The hollow seal portion 48 is integrally formed with the mounting base portion 46 between the mounting base portion 46 and the seal lip portion 50, and has a substantially circular cross section. The hollow seal portion 48 is adapted to elastically contact and seal the body panel 44 when the door is closed. Reference numeral 52 is a door glass, and 53 is a weather strip that supports the door glass 52.

According to the vehicle door weather strip 42 constructed as described above, even if high water pressure is applied through the gap 49 due to, for example, a car wash, it is blocked by the tip portion 50b of the seal lip portion 50. High water pressure is less likely to be directly applied to the root portion 50a of the seal lip portion 50. Therefore, the base lip portion 50a is further bent or curved, so that the elastic contact of the seal lip portion 50 with respect to the body panel 44 is not turned up and the sealing performance is not weakened. On the contrary, the high water pressure is applied to the tip portion 50b, so that the tip portion 50b is pushed, and the elastic contact force of the tip portion 50b with respect to the body panel 44 is increased, so that excellent sealing performance is obtained.

[0027]

As described above, according to the automobile door weather strip of the present invention, the root portion which is the bent portion or the curved portion of the seal lip portion is covered from the outside of the vehicle.
Wrinkles that occur at the base due to bending or bending are hard to see from the outside of the vehicle, so it looks good in appearance.
Also, even if high water pressure is applied through a gap, for example, by car washing, it is blocked at the tip part, and it becomes difficult to directly apply high water pressure to the base part, so it is possible to bend or bend the base part as a whole seal lip part. Since no high water pressure is applied, no gap is created between the seal lip portion and the door sash, and as a result, diversion water is prevented from being generated. Further, it is also possible to prevent a case where high water pressure reaches the mounting base portion to destabilize the mounting state or cause a position shift.

Further, since the tip portion of the seal lip portion is thick, it is difficult to turn over due to high water pressure, so that high water pressure is hard to reach the hollow seal and the sealing property is good. On the contrary, when the high water pressure is applied to the tip portion, the tip portion is placed on the body panel side, and the elastic contact force of the tip portion with respect to the body panel is increased, so that excellent sealing property is obtained. In this way, only by making the tip portion of the seal lip portion thick, the root portion is not particularly thickened or the load of the hollow seal portion is not increased, so that the closing force of the door does not increase.

Further, preferably, the width of the thick portion of the formed seal lip portion is widened to close the gap when the door is closed, so that high water pressure is applied not only to the root portion but also to the periphery thereof. Since it becomes difficult, the sealing effect against high water pressure is further enhanced.

More preferably, since the back side seal lip portion which is elastically contacted with the door sash at the time of mounting the mounting base portion is formed, the sealing property is further enhanced. In addition to this, since a hollow seal portion is formed to double-seal, the gap between the door and the body panel is surely sealed.

Further, preferably, when the door is closed, the width of the thick portion of the seal lip portion is wider than the gap formed between the tip of the protrusion provided on the mounting base and the body panel facing the protrusion. Since the gap is closed, high water pressure is less likely to be applied not only to the root but also to its surroundings, which reduces the high water pressure sneaking into the articulating joint. The sealing effect against high water pressure is further enhanced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an automobile door weather strip 22 according to a first embodiment of the present invention.

FIG. 2 is an automobile door weather strip 2 shown in FIG.
2 is a cross-sectional view showing a state in which 2 is attached to the door sash 1 and the door 3 is closed.

FIG. 3 is a cross-sectional view showing a state where high water pressure is applied to the automobile door weather strip 22.

FIG. 4 is another vehicle door weather strip 32 according to the first embodiment of the present invention, which is a door sash 1;
FIG. 6 is a cross-sectional view showing a state in which the door 3 is mounted on the vehicle and the door 3 is closed.

FIG. 5 is a sectional view showing a state in which a vehicle door weather strip 42 according to a second embodiment of the present invention is attached to a door sash 41 and the door is closed.

FIG. 6 is a side view showing the external appearance of the automobile.

FIG. 7 is a cross-sectional view taken along line AA of FIG. 6 showing a vehicle door weather strip 2 according to a conventional example.

FIG. 8 is a cross-sectional view showing a state where high water pressure is applied to the automobile door weather strip 2.

FIG. 9 is another conventional example of a vehicle door weather strip 12 mounted on a door sash 1 and a door 3;
It is sectional drawing which shows the state which closed.

[Explanation of symbols]

1,41 Door sash 1a, 41a Door sash edge 2,12 Automotive door weather strip 3 Door 4,44 Body panel 5 Retainer 6,46 Mounting base 7 Seal lip 7a Base part 7b Tip 8 Hollow seal 9, 49 Gap 10,50 Seal lip part 10a, 50a Base part 10b, 50b Tip part 11 Rear seal lip part 22,32,42 Automotive door weather strip 41b Door sash end part 51 Projection part

Claims (4)

[Claims] 1. A mounting base portion to be mounted on a door sash, and a body extending from the mounting base portion near a body panel that is bent or curved toward the vehicle exterior side when the door is closed and faces the door sash edge portion. In a vehicle door weather strip including a seal lip portion elastically contacting a panel, a tip portion of the seal lip portion is built up on the outside of the vehicle, and a bent portion or a curved portion of the seal lip portion is closed from the outside of the vehicle when the door is closed. A door weather strip for an automobile, characterized in that a thick portion is formed so as to cover it. 2. When the door is closed, the thick portion of the seal lip portion is made wider than the gap formed between the door sash edge portion and the body panel facing the door sash to close the gap. The door weather strip for automobiles according to claim 1, characterized in that. 3. A hollow for forming a rear seal lip portion elastically contacting the door sash when the attachment base is attached between the attachment base and the seal lip portion, and elastically contacting the body panel when the door is closed. The door weather strip for an automobile according to claim 1 or 2, wherein a seal portion is formed between the attachment base portion and the seal lip portion. 4. A projecting portion in which a mounting base portion mounted on the door sash covers an end portion of a substantially horizontal door sash, and is projecting outward from the seal lip portion toward the body panel from the mounting base portion. When the door is closed, the width of the thick portion of the seal lip portion is made wider than the gap formed between the tip of the protrusion and the body panel facing the protrusion so as to close the gap. The door weather strip for automobiles according to claim 1, wherein